Dump-car underframe



March 15,1927.

w. M. SHEEHAN DUMP CAR UNDERFRAME 4 Sheets-Sheet 1 Filed April 1926 INVEIYTOJ? M M. SIIEEMN My V Mum March 35 1927.

I w. M. SHEEHAN DUMP CAR UNDERFRAME 4 Sheets-SheetZ Filed April 12 ZYVENTOR Try-SI a ch 9 w. M. SHEEHAN DUMP CAR UNDERFRAME 4 Sheets-Sheet 5 Filed April 1926 March 15 1927.

W. M. SHEEHAN DUMP CAR UNDERFRAME Filed Aprll 1926 4 Sheets-Sheet 4 [NYE/V701? MLLJ MMSHEEHAN I Patented Mar. 15, 1927. I

stock and consists derframe structure PATENT OFFICE.

WILLIAM 'M.

STEEL COMPANY, on

SHEEHAN, OF ST. LOUIS, MISSOURI,

ASSIGNOR TO COMMONWEALTH ST. LOUIS, MISSOURI, A CORPORATION OF NEW JERSEY- DUMP-CAR UNDERFRAME.

Application filed April 12, 1926. Serial No. 101.381.

My invention relates to railroad'rolling in an improvedcar unparticularly adapted for 'use on dump cars of the tilting body type.

In such cars, it is customary for the car body .to be built as a unit and pivotally mounted upon the underframe, the body and the underframe being equipped with hingelike elements and there being mechanism between the body and undcrt'ran'ie whereby the body may be tilted on its hinge ele'me nts. Owing to themovement of the car body,

. the car underframe'should not be very wide operation. The car as it would interfere with the portion of the car body which is lowering in a dumping body structure, being movable on the underframe, cannot add any 1t follows that the underframe must be made of carrying j transmit-ting sufficiently compact and strong to accommodate the above conditions, and the underframe, in addition to having the the superstructure load and the buffing and pulling stresses, must resist transverse stresses not usually required of the car underframe but present incars of this type because of the body tilting mechanism. Such mechanism usually 1 consists of air cylinders with their pistons moving transversely of the underframe, the

"' pistons and cylinders being connected to the ing movement underframe and body so that the admission of air to the cylinder thrusts againstthe car body and underframe and results in tiltof the car body.

The object of my invention is to provide an efticient underframe' adapted to function as required by the above conditions and preferably -'my invention consists in a onepiece steel casting of box-shape cross section throughout a substantial portion of its length and having integral hinges or hinge y mounting elements, integral brackets for the operating mechanism, integral bolsters, and

draft sills, and integral elements for housing or mounting the bufling mechanism I which cushions the impact between the tilting body and the underframe'.

In the accompanying drawings which illustratemy invention- Figure 1 is a top view of my underframe.

Figure 2 is a side elevation of the same.

Figure 3 is a transverse section through i the underframe alongthe center line of the bolster and indicating inbroken lines the usual duties car truck and car superstructure in two vp0- sitions.

Figure buliingmechanism housing provided on the bolster.

Figures 4, 5, 6, and T are detail transverse vertical sections taken on lines 4-4, 55, 6-6, and 7-7, respectively, of Figure 1.

Figure 8 is a top view of/a modified'embodiment of my invention.

Figure 9 is in part a side elevation and in part a longitudinal vertical section through the same underframe.

Figure 10 is a detail top view of one of the brackets on the underframe and drawn to a larger scale than shown in Figure 8.

Figure 11 is a transverse section through the underfranie illustrating the truck and car body similarly to the showing of the preferred structure in Figure 3.

Figures 12, 13, and 14 are detail transverse sections taken on lines 12 -12, 13-13,

and 1414, respect1vely,"of Figure 8.

'1 he preferred underframe structure indisubstantially aligned with the, draft sills and with the sides ot'the center sill and trans-,

fer the longitudinal forces to opposite sides of the bolster. j y

The outer ends of the bolster are provided with housing members 5'for.recciving springs 6 or other mechanism for engaging the car body as the latter is lowered into dumping position. Spaced walls 5" extend between housings z'iand reinforce these elements againstthe shocks from the tilting body.

The walls of the center sill structurevmay be li htened at intervals by suitable openings 4. At intervals the structure has integral upstanding elements 8 upon which the tilting car body may be pivotally mounted.

Two relatively short walls 3* are 3 is an inclined top view of the i trate the structure, the elements 8 form one of the hinge elements, but, obviously, these elements could consist in pads upon which both hinge elements could be mounted, it

' desired.

Between the bolsters and preferably staggered with the body mounting elements 8 are suitable brackets 11 and 12. These brackets are adapted to mount the air cylinders, air reservoirs, and mechanism connected therewith tor tilting the car body. The cylinders and mechanism are not illustrated as difl'erent types are now in use and they form no part of my present invention.

One of the operating cylinders or air reservoirs maybe mounted on suitable hangers secured to pads 13 on the side and "top of the'box girder as indicated in Figure (3. Various other modifications of the method of mounting the cylinder on the under-frame may be provided. y

In connection with the laterally extending brackets 12, I desire also to provide a transverse member 14 (Figure 5) which extends beneath the sill so as to brace the brackets on opposite sides of the sill from each other. The thrust on the underframe produced by the operation of one cylinder may be trans mitted not only to the adjacent portion of the unde-rtrame but also to 'the'opposite sill or side of the undert'rame.

In the modification illustrated in Figures 8 to 14 the feature of a one-piece undertrame is retained but the same is shown as adapted to mount a dumping body and in a somewhat different manner from that indicated in the preferred form. In this modification, the longitudinal members of the underframe consists in two I-shaped sills 15 spaced a substantial distance from each other and connected at intervals by suitable transoms 16. Brackets 17 extend outwardly from sills 15 and form hinge butts for mounting the car body. It will be understood that the corresponding hinge elements on the car body on one side of the underframe maybe released to permit the car body to tilt on its hinges on the other side of the undert'rame.

Each hinge element on the underframe preferably consists of an outer cylindrical portion supported from the side sill by spaced ribsQt), both ot which have their inner edges spaced from the web of the side sill 15 and the edge of one of the ribs is cut away a substantially greater distance than the other rib to facilitate molding and casting-of the underframe.

As suggested in connection with my preferred embodiment, I contemplate the use of pads on the ends of the brackets 17 upon ot' a different type.

' car body, and integral as are included within the scope of my claims.

I claim:

1. A car underframe comprising a onepiece-casting in the form of a box girder forming a center sill and having integral upstanding elements on which a tilting car body may be mounted. w

2. A one-piece casting forming a car underframe longitudinal sill member of box shape cross-section, having upstanding elements on which a tilting car body may be mounted.

3. In a car underframe, a box girder sill "member having integral hinge elements on which a tilting car body may be mounted.

4. A one-piece casting forming a box girder car sill with one or more integral elements extending upwardly from the center thereof to form hinge elements for a tilting body.

5. A one-piece casting forn'iing a box girder car sill, the upper wall of which has portions converging upwardly from' the sides thereof to form elevated car body mounting elements (3. A car undert'rame for a tilting body, comprising a box-shapedgirder with integral brackets thereon tor mounting mechanism tor tilting the car body.

7. In a one-piece casting forming an un dert'rame for a tilting car body, brackets on opposite sides of said underlrame for mounting body tilting cylinders or like mechanism.

8. A one piece casting .forming a boxshaped girder undert'rame adapted to carry a tilting car body and including integral laterally extending brackets for mounting car tilting mechanism.

9. 'A. one-piece casting comprising an undert'rame for a tilting car hody and including integral elements for carrying hinges and including integral elements for mounting car body tilting mechanism.

10. A one-piece casting comprising an underframe for a tilting car body and including integral hinge elements for. mounting :1 elements projecting transversely of the underframe for mounting car body tilting mechanism.

11. A one-piece casting comprising a car mounting bodyfor a tilting body each other.

13. A one-piece casting comprisin an underframe for a tilting body car an including a box-shape center sill with bolsters extending transversely thereof and provided with buffer spring pockets.

14. An underframe for tilting car bodies consisting of a one-piece casting comprising a box-shaped girder with integral upwardly facing pockets for body bufiing mechanism.

15. In a car underframe, a center sill, a bolster formed integrall gral elements on said sill or mounting a tiltmg body hinge, and integral elements on said bolster forming. buffer spring pockets.

16. An underframe for a tilting body car comprising a one-piece box girder sill with hinge elements thereon and with a bolster formed integrally therewith and including buflin mechanism pockets located below the top 0 said sill. e 1

17. In an underframe for tilting body cars, a box-shaped longitudinal sill, integral brackets for body tilting mechanism'located on opposite sides of said sill, and a connection between said brackets beneath said sill, all formed integrally. I e

18. In a car underframe, a center sill, a

bolster, the vertical webs of said sill and bolster being inclined to their respective center lines and merging with each other.

19. In a car underframe, adraft sill, a bolster, the vertical webs of said sill and bolster being inclined to their respective centerlines and merging with each other.

20. In a car underframe, a box-shaped draft sill, a box-shaped center sill, a bolster between said sills, the vertical front and rear walls of said bolster being curved into said draft and center sills, respectively.

21. In a car underframe, a box-shaped center sill with its sides curving outwardly near its end to extend transversely of the underframe and form a bolster element.

22. In a car underframe, a center sill, a

draft sill, the vertical walls of said sills curving outwardly at their adjacent ends to therewith, inte extend transversely of the un'derframe and cooperating to form the vertical walls of a bolster member. 7

23. In a car underframe, ing a vertical side wall curvin near its end to extend transverse y of the underframe to form a bolster element, and a longitudinal vertical member, for transmitting draft and bufling stresses, substantially aligned with said sill and extending beyond said bolster forming element.

24. In a car un'derframe, a center sill, a draft sill, said sills having vertical webs curving outwardly at their adjacent ends to form a bolster member, and a relatively short vertical longitudinal member, substantially aligned with said sills, for transmitting longitudinal stresses between them.

25. e In a car underframe, spaced draft sills, a bolster, said draft sills diver ing near their rear ends and at their ends eing inclined outwardly so as to merge with said bolster.

26. In a car underframe, a bolster, and a center sill with its sides diverging near the a center sill havoutwardly endof the center sill and'at the end extending outwardly-to merge with said bolster.

27. A one-piece casting forming a car underframe and including a center sill and a bolster united witheach other by vertical arcuate webs.

28. A one-piece casting forming a car underframe and including a draft sill and a bolster united with each other by vertical arcuate webs. I s V 29. A one-piece casting forming a car underframe and including a center $111, a draft sill, a bolster between them, said sills, being united withsaid bolster by vertical arcuate webs. j

30. A one-piece casting forming a car underframe and including united with said bolster b vertical arcuate webs, and integral ion to tending substantially etween the ad'acent ends 0 the straight portions of said si s.

WILLIAM M. SHEEHAN.

, a center sill, a 'draft' sill, a bolster between them, said sills being inal members ex- 

